BAD SERVICE FROM SUMMER MOBILE

I did an upgrade through summer mobile on and when the phone was delivered in 1 September i sent it back as it was the wrong phone. I have been struggling to get this sorted out and eventually an consultant from summer mobile told me that i need to go into a MTN store so they ca do the reversal.

17 September I went into the store MTN did the reversal but still can't issue me the phone as there is a block from summer mobile that they still to the day of 22 September as numerous requests from MTN have not removed.

MTN has sent proof that phone was not taken and asked again to release the block, according to summer mobile the phone need to be at there ware house.

Please could someone explain how a phone get sent to you within 3 days but takes 22 days to go back to a warehouse. AND to top it all off my phone has been ****** in this time so I sit with NO PHONE and MTN can't even do a sim swop because of summer mobile block.

COULD SOMEONE PLEASE RELEASE THE BLOCK SO I CAN UPGRADE AND HAVE MY PHONE!